Acids & Bases

Front

What is an acid?

Back

An acid is a substance that donates protons (H+) in a solution and has a pH less than 7.

Front

What is a base?

Back

A base is a substance that accepts protons (H+) or donates hydroxide ions (OH-) in a solution and has a pH greater than 7.

Front

What does litmus paper indicate?

Back

Litmus paper is used to test whether a solution is acidic, neutral, or basic by changing color.

Front

What color does litmus paper turn in a basic solution?

Back

Blue.

Front

What color does litmus paper turn in an acidic solution?

Back

Red.

Front

What is the pH scale?

Back

The pH scale measures how acidic or basic a solution is, ranging from 0 (very acidic) to 14 (very basic), with 7 being neutral.

Front

What is a strong acid?

Back

A strong acid is an acid that completely dissociates in water, releasing all of its protons.

Front

What is a strong base?

Back

A strong base is a base that completely dissociates in water, releasing all of its hydroxide ions.

Front

Give an example of a strong acid.

Back

Hydrochloric acid (HCl) is a strong acid.

Front

Give an example of a strong base.

Back

Sodium hydroxide (NaOH) is a strong base.